Discipline
AI applications
I build AI applications with repeatable checks, human approval, and clear operating limits.
AI application / release engineering
Release Guardian
A 13-node LangGraph release gate: four evidence retrievers, deterministic validators, bounded retries — and the publish decision stays with a human.
132 live graph runs8/8 aggregate gates passed100% citation fidelity
Deterministic RAG evaluation
RAG Quality Lab
A controlled regression test caught a knowledge-base update degrading the strongest pipeline; I then extended the same evidence lifecycle into tracked evaluation infrastructure for 11,309 enterprise documents.
4/12 questions regressed11,309 docs130 enterprise questions
Browser-local redaction workbench
Privacy Preflight Web
A browser-local workbench for reviewing sensitive text, images, and multi-page PDFs with English + Simplified Chinese OCR and destructive export checks.
96 embedded-worker tests67 recorded browser casesOCR 19/19 hits / 2 false positives